255 



JPunica Granatuin, L. Lythracea?. Fruit and root: Tannic 



acid; Mannit. 

 Pyrola umhellata, L. Ericaceae. Whole plant: Chimapliilin. 

 Pyrus Aria, Ehrh. ; P. tormirudis, Ehrh. Rosacese. Flower: 



Amygdalin. 

 Pyrus cmcuparia, Gaertn. Flower: Amygdalin; Trimethylamin. 



— Fruit: Sorbin. 

 Pyrus conwiimis, L. Flower : Trimetliylamin. 



„ Cydonia, L. Seeds: mucilage. 



„ Malus, L. Root-bark: Phlorrhizin. 

 Quassia amara, L. Simarubese. Wood and bark : Quassiin. 

 Quercus coccinea, Wang. Amentacese. Bark: Quercitrin. 

 „ Ilex, L. Leaf: Quinic acid or an allied acid. 

 „ infectoria, Oliv. Galls of branches: Ellagic and Gallo- 



tannic acids. 

 Qusrcus Bobur, h. Fruit: Quercit; volatile oil. — Bark: Quercin; 



Tannic acid. 

 Quercus Siiber, L. Bark : Cork substance. 

 Quillaja Sa2)onaria, Mol. Rosacea. Root: Saponin. 

 Ramalina, several species. Lichenes. Lichenin; Usnic acid. 

 Ranunculus hulhosus, L.; R. Flammula, L.; R. scelerahts, L. 



Ranunculacepe. Whole plant: Anemonic acid; Anemonin. 

 Ranunculus, many species. Whole plant: volatile acrid matter. 

 Reseda Luteola, Ij. Resedacese. Whole plant: Luteolin. — Seed: 



drying-oil. 

 Reseda odorata, L. Flower : volatile oil. 

 Rhamnus catharticus, L. Rhanniaceae. Fruit : Rhamno-cathartin ; 



Rhamnin; Rhamno-xanthin ; Rhaumo-tannic acid. — Bark of 



stem and root: Rhamno-xanthin. 

 Rha^nnus Frangula, L. Fruit, bark of stem and root : Rhamno- 

 xanthin. 

 Rhamnus 2^'i"^nifolius,^^\)ij\i.; R. in/ectoriu^,!^.; R. saxatilis,J-i.; R. 



amygdalimis, Desf.; R. oleoides, L.; R. Grcecus, Reut. Fruit: 



Chryso-rhamnin ; Quercetin; Xauthorhamnin. 

 Rlieum australe, D. Don. Polygonese. Root : Emodin. 

 Rheum officinale, Baill., and several other species. Root : 



Chrysophanic acid; Aporetin; Erythroretiii ; Phfeoi'etin. 

 Rhinanthus major, Ehrh. ScrophulariuEe. Seed : Rhinanthin. 

 Rhododendron ferrugineum., L. Ericacese. Leaf : Ericinol ; Eri- 



colin; Rhodotannic acid. 

 Rhus coriaria, L. Anacardiacere. Bark : Gallotannic acid. 



,, semialata, Mari*. Galls of branches : Tannic acid. 



„ succedanea, L. Fruit, leaf and branches : Japanese wax 



with Palmitin. 

 Rhus toxicodendron, L. Leaf : Rhoitannic acid, 

 Ribes rubrum, L. Saxifragese. Root-bark: Phlorrhizin. 

 Richardsoiiia scabra, St. Hil. Rubiaceie. Root : Emetin. 



